A Kerbstone is a constricted stone or a concrete solid which fix end to end with other solids to form a Kerb. It makes the drivers conscious of the pavements and greenery areas in demarcating roads, streets, car parks etc. It makes a clear-cut view of the carriageway.A curb is the edge of the sidewalk beside the road. When you're using the word curb as a noun, it's the raised edging beside a street. When curb is a verb, it means to restrain or hold back, like when you curb your impulse to laugh while watching a badly acted play.
